Packaging box



FIG. 1 is a top front left perspective view of a packaging box showing the claimed design;

FIG. 2 is a bottom rear right perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a left view thereof; and,

FIG. 8 is a right view thereof.

The broken lines in the drawings illustrate portions of the packaging box that form no part of the claimed design. 

CLAIM We claim the ornamental design for a packaging box, as shown and described. 